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Bierwang
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Bierwang

Bavarian gas storage site run by Uniper, exempt from Germany's reduced 45% fill target.

Bierwang, a Bavarian storage site run by Uniper Energy Storage, also hosts the HyStorage project injecting hydrogen blends underground for research; unlike six named pore sites it answers to the standard 80% fill target for 1 November.

Last refreshed: 31 July 2026 · Appears in 1 active topic

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Background

Bierwang is one of Germany's Bavarian storage sites, operated by Uniper Energy Storage. Alongside its conventional natural gas operation it hosts HyStorage, a research project that injects blends of natural gas and hydrogen into a separate storage horizon to study how the underground behaves with hydrogen present; the research injection is kept apart from the site's main gas business.

Because Bierwang sits outside the six named pore-storage sites given a lighter obligation, the Gasspeicherfüllstandsverordnung holds it to the standard 80% fill requirement for 1 November rather than the reduced 45%.

Common Questions
What is Bierwang gas storage used for?
Bierwang is a Bavarian gas storage facility operated by Uniper Energy Storage, which also hosts the HyStorage project researching natural gas/hydrogen blend storage.Source: Uniper
Does Bierwang have the reduced German gas storage target?
No. Bierwang is one of four Bavarian sites exempt from the reduced 45% target, so it must meet the standard 80% fill requirement for 1 November under Germany's Gasspeicherfüllstandsverordnung.Source: Bundeswirtschaftsministerium
What is the HyStorage project testing at Bierwang?
HyStorage injects methane blended with 5%, 10% and 25% hydrogen into a small Bierwang reservoir across three phases, checking whether Bavaria's pore rock tolerates hydrogen before withdrawal.Source: Uniper / OGE
Who is involved in the Bierwang hydrogen storage trial?
Uniper hosts the trial with grid operator Open Grid Europe, Austria's RAG Austria, SEFE and Slovenia's NAFTA a.s., testing hydrogen tolerance ahead of wider Bavarian pore storage plans.Source: Uniper